Documental Castells de Ciència

How did human tower building as we know it today originate? Has it always been the same?
Historical sources indicate that the origin of the phenomenon lies in the transition from the Ball de Valencians to the first documented human tower structures at the end of the 18th century. Through archive documents and old testimonies, the narrative shows how a festive and religious practice progressively evolved into an increasingly complex collective activity with an identity of its own. By taking a historical perspective, we can see how castells did not just appear suddenly, but rather emerged through a slow process of cultural and social accumulation.

What happens inside the body during the moments of maximum tension in a human tower?
Neuroscience brings us closer to the internal mechanisms that accompany emotion; that is, the automatic reactions, chemical changes and nervous system responses that are triggered when the body perceives risk, effort or reward. At this level, the boundary between emotion and biology becomes blurred, and the documentary explores how these responses can connect seemingly very different experiences.

How can a structure stay up when it is made out of humans and seems to defy balance?
Architecture allows us to read human towers as ephemeral structures in motion. Classical architectural concepts can be used to interpret how forces are contained and redirected within a living structure. The parallel with historical buildings helps us to understand a key principle: what sustains the human tower is not just strength, but the way it is managed.

How is it decided that one human tower is worth more points than another in the Human Tower Competition?
Mathematics attempts to understand how a human tower can be assigned a difficulty and compared with others by using specific data and variables such as height, structure, number of people or the context of the performance. From there, estimations and models can be made to approximate the scores. However, we need to exercise caution when doing this because there are always factors that are difficult to quantify. The reality of human towers is more complex than a set of numbers.

What makes a human tower stay up... or fall down?
Physics can tell us how the weight of everyone in the human tower is distributed from the base right to the top. It's not a single force, but many acting at once and balancing each other out. When this balance is maintained, the tower can grow higher. When it breaks, the tower shifts or can end up falling. That's why every small movement counts, and coordination is key to everything working.

In a structure made up of many people, what is the mental glue that holds it all together?
Psychology delves into the internal processes that make collective trust possible: the management of fear, attention, motivation and connection with others. In the context of a human tower, performance depends not only on technique but also on the regulation of hidden factors such as emotions, pressure and expectations.

What makes a team feel so united when there are so many people involved?
Sociology analyses human towers as a space of shared relationships, symbols and meanings. Colours, gestures and rituals are not just visual elements, but codes that define belonging and difference. The documentary explores how these social structures are formed, reinforced and recognised, both from within and from without.